What do you get for the following???
SELECT *
FROM citytime
WHERE city_state='Mountain View, CA'
;
If the answer is "more than 1 row", then you've probably identified the problem. Look at the data and see if your assumptios about what the citytime should be are actually correct.
As a sidebar, the code you posted is VERY suseptible to SQL INJECTION and should be changed to parameterized embedded SQL instead.
--Jeff Moden
Change is inevitable... Change for the better is not.